mrcharles
422999bf3c
Performance optimization engagement for a 7-host Proxmox R&D cluster.
Captures the accumulated work across host tuning, network analysis,
fleet assessment, and kubernetes architecture planning.
Contents:
- Host-side tunings (scripts/): CPU governor, swappiness, BBR, NFS
nconnect, tuned profiles -- complete on 5 of 7 hosts
- Validation + benchmarking scripts: iperf matrix, bond/NFS fixes
- Collected host data (returned-logs/): check.sh output from all 7
hosts + iperf results, including newly-validated pfv-tsys9
- AGENTS.md: operating context for AI agents
- PROJECT.md: board-ready fleet assessment with VM placement and
storage redundancy analysis (40 VMs across 7 hosts)
- K8S.md: kubernetes architecture deep-dive covering cnode/wnode
distribution, StorageClass design, and ETL/HPC workload planning
💘 Generated with Crush
Assisted-by: Crush:glm-5.2
40 lines
1.7 KiB
Bash
40 lines
1.7 KiB
Bash
#!/usr/bin/env bash
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# Probe pfv-tsys4 for what's available to drive the serial console.
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# Also snapshots local ssh/scp activity so we can de-conflict with the
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# other agent running in this directory.
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set -u
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echo "===== LOCAL ssh/scp activity (other-agent de-confliction) ====="
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ps -eo pid,ppid,etime,user,args | grep -E 'ssh|scp' | grep -v grep || echo "(none)"
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echo
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echo "===== Ping pfv-tsys4 ====="
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ping -c1 -W2 pfv-tsys4 >/dev/null 2>&1 && echo "ping OK" || echo "ping FAIL"
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echo
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echo "===== Probe pfv-tsys4 over ssh ====="
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ssh -o BatchMode=yes -o ConnectTimeout=5 root@pfv-tsys4 'bash -s' <<'REMOTE'
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echo "--- host ---"
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hostname; uname -a
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echo "--- tools ---"
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for t in python3 python expect screen minicom picocom stty fuser lsof; do
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p=$(command -v "$t" 2>/dev/null) && echo "$t -> $p" || echo "$t -> MISSING"
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done
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echo "--- pyserial ---"
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python3 -c "import serial; print('pyserial', serial.__version__)" 2>&1
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echo "--- device node ---"
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ls -l /dev/ttyUSB2 2>&1
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stat -c '%n owner=%U:%G mode=%a' /dev/ttyUSB2 2>&1 || true
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echo "--- who holds /dev/ttyUSB2 ---"
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fuser -v /dev/ttyUSB2 2>&1 || echo "(fuser: none or n/a)"
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lsof /dev/ttyUSB2 2>&1 | head -20 || true
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echo "--- screen sessions on this host ---"
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screen -ls 2>&1 || echo "(no screen / not installed)"
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echo "--- current tty settings (only readable if not held exclusively) ---"
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stty -F /dev/ttyUSB2 2>&1 || echo "(held exclusively - expected if screen is up)"
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echo "--- baud hints in config/history ---"
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grep -riE "ttyUSB2|115200|9600|baud" /etc/ ~/.screenrc ~/.bash_history 2>/dev/null | head -20 || true
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echo "--- recent console-related processes ---"
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ps -eo pid,etime,user,args | grep -E 'screen|minicom|picocom|ttyUSB' | grep -v grep || echo "(none)"
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REMOTE
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